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History
Review
Werner
Poss started POSS mechanical separator development in 1971. Original
development work, continuous refinements and a range of machine
configurations were developed over a number of years in a proprietary
in-house production operation.
POSS
Design Ltd. was established in 1978 and has been marketing this
proven line of mechanical separators for over the last 30 years. There
are currently over 500 installations in over 50 countries.
POSS
has pioneered the production of mechanically separated meat with
exceptionally high textural qualities. The final product consists
of meat tissue strands, which increase the binding quality, and
expands the range of uses, especially where texture and appearance
are important. This occurs by use of the unique patented "screen
plate separation head" design which keeps the separation
temperature to low levels, eliminates the potential to denature
the protein and maintains the functional properties of the meat.
POSS
equipment is manufactured to uncompromising quality standards
and is guaranteed to perform to POSS specifications. It is designed
for ease of assembly and disassembly for cleaning. The system
can be maintained in the most productive condition with a minimum
of maintenance.
POSS
equipment operates in the range of 200 kg/hr (input) to over
15,000
kg/hr. Higher throughput rates are available on request.
Process
Refinements 1. Auto Restrictor The traditional
method of yield control is by the manual adjustment of a backpressure
configuration called a "restrictor". 
POSS is unique in the industry by making available a hydraulically
controlled "Automatic Restrictor". Experience worldwide has
seen yield improvements of between 1½ % to as high as 4%
compared to the conventional manually adjusted restrictor. This
feature is readily adaptable to existing equipment and can be
"retro-fitted" on to larger capacity POSS machines.
2.
Inline Pumps (ILP): In some cases, more processing pressure is required
than can be generated with rotary screw machines. This can be
due to the nature of the product being processed or when perforated
screens with very small holes are being used. An inline pump was
developed to allow these products to be processed. Also
"soft raw materials" eg. boneless turkey drums, chicken or
turkey boney trim, etc. can be processed more efficiently when
the ILP is housed between the feed auger and desinewing screw.
Existing
POSS separators can also be equipped with inline pumps.
For
two-screw machines, the pump assembly is fully interchangeable
with the existing center bearing or knife assembly. Even existing
single-screw POSS machines can be modified to incorporate an inline
pump.
3.
Comminuted Meat Comminuted meat can be produced in two ways: 3.1
Refine the high textured mechanically separated meat through an
emulsifier. 3.2 Configure the POSS machine with perforated screens
having holes of a small diameter (0.6m ±). In some cases,
an inline pump is
required.
Alternative
3.1 allows the processor to produce either the highly textured
product and/or a paste-like, finely comminuted product, depending
on further processing requirements.
Processing
Applications - In addition to meat/bone Separation
1.
Desinewing of Beef Shanks
1.1_
Beef Hind Shanks The CCM 2000D POSS single-screw machine is being
successfully used by major beef processors in the U.S. to desinew
bone-out beef hind shanks.
The
recovered product is high quality coarse ground beef (75 to 90%
by volume) along with a finer ground beef (10 to 25% by volume).
The coarse ground beef portion has fat content lower than the
shank meat introduced into the machine.
1.2
Beef Fore Shanks A more recent development is the desinewing of
fore shanks, which are considerably larger than hind shanks.
The
POSS CCM 2000 D2 machine, a two-screw machine, was developed for
this application.  This
is a heavy-duty machine, which has the capability of controlled
size reduction prior to the desinewing operation for more consistent
processing. The end product is similar to that noted above for
operation with single screw machines.
2.
Desinewing of Turkey Drumsticks: A modified version of the CCM
2000D machine is used for desinewing of bone-out turkey drumsticks.
A high quality, coarse ground meat is produced and earns a
higher market value than standard MST.
2.1.
Desinewing of wishbones and boney trim: As mentioned above an
In Line Pump (ILP) in place of the standard center bearing can be
housed between the feed auger and desinewing screw to effectively
separate small bone and sinew from these “soft raw materials” and
achieve higher through put and yield rates than a standard machine
configuration.
3.
Ground Turkey: POSS machines using the patented screen plate separation
head are approved for the production of ground turkey for the
USDA School Lunch Program (covered by commodity regulation).
4.
Soft (Low Pressure) Deboning: A range of POSS machines (both single
and two screw configurations) can be configured to operate under
low-pressure conditions. This allows processing with minimal bone
breakage where this is a regulatory requirement in the labeling
of end use products. The end product is a high quality, coarse
ground poultry. Conversion kits are available for existing equipment.
 The
POSS PDE 2500 DS two-stage machine has been developed for this
application. Product recovery from Stage 1 is a coarse ground
product. The remainder of recovery from Stage 2 is MSM. Approximately
30-45% of recovery occurs in Stage 1.
5.
Processing of Poultry Trim: As mentioned in paragraph 2.1
above POSS mechanical desinewing machines are being successfully
used by both chicken and turkey processors to remove bone chips
& sinew from “boney trim” generated on standard deboning lines.
The resulting trim meat produced on the POSS desinewing machine
can be classified as a true ground poultry product
6.
Pork Skin Defatting (PSDF): POSS has perfected the art of
separating the fat from tough pork skins and achieving a clean,
diminutive size pork skin that can a valuable source of collagen
for cosmetic and pharmaceutical processors. The major
opportunity for POSS Defatting machines is for large gelatin
plants to upgrade “House Skins” in to a higher yielding raw
material by lowering the fat content, thereby dramatically
adding value to the skin processing application.
POSS
Design Limited Capabilities :
POSS Ltd. has a wide range of standard machine models available
for fast delivery along with a full range of spare parts for all
the existing machines in the field.
POSS Ltd. will also modify or build equipment to meet specific
customer requirements, such as:
-throughput
requirements
-high texture
-comminuted meat, MSC or MST
-premium quality ground poultry
-Automatic Restrictor for maximum yield levels
-Complete electrical, power, control and conveying systems
-MDM Meat pumps
-Engineer and provide ancillary equipment relating to the
complete MDM or ground poultry operation
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